People : Joanne Duff to Kourtnee Duff
Joanne Duff 7 people
Jocelyn Duff 4 people
Joe Duff 5 people
Joel Duff 2 people
John Duff 96 people
Jon Duff 3 people
Jonathan Duff 2 people
Joni Duff 2 people
Jonna Duff 2 people
Joseph Duff 35 people
Josephine Duff 2 people
Joshua Duff 5 people
Joy Duff 6 people
Joyce Duff 5 people
Judith Duff 10 people
Judy Duff 3 people
Julia Duff 3 people
Julie Duff 25 people
June Duff 2 people
Justin Duff 10 people
Kaitlyn Duff 2 people
Karen Duff 22 people
Katelyn Duff 2 people
Katherine Duff 8 people
Kathleen Duff 10 people
Kathryn Duff 3 people
Kathy Duff 5 people
Katie Duff 2 people
Kay Duff 2 people
Keenan Duff 3 people
Keith Duff 8 people
Kelley Duff 3 people
Kellie Duff 2 people
Kelly Duff 15 people
Ken Duff 3 people
Kendra Duff 2 people
Kenneth Duff 19 people
Kenny Duff 2 people
Keri Duff 2 people
Kerry Duff 2 people
Kevin Duff 28 people
Khadijah Duff 2 people
Kiana Duff 2 people
Kim Duff 7 people
Kimberley Duff 2 people
Kimberly Duff 8 people
Kirk Duff 4 people